update mermaid

src/test/TestAlgoDiffusionEpoq.java

@@ -58,7 +58,7 @@ public class TestAlgoDiffusionEpoq {
         DiffusionEpoque algo = new DiffusionEpoque(c);
         c.setAlgoDiffusion(algo);
          
-        ScheduledExecutorService clock =  scheduler.getScheculer();
+        ScheduledExecutorService clock =  scheduler.getScheduler();
         ScheduledFuture<?> future = clock.scheduleAtFixedRate(() -> c.tick(), 0, 500, TimeUnit.MILLISECONDS);
 
         Thread.sleep(10000);